(Used) 2007 Chevrolet C8500, COMPLETE REAR DIFFERENTIAL- Make: Spicer, Model: 21060S, Ratio: 6.50, Capacity: 21,000 Lbs, Hub Bolts: 10, Brake Type: Drum, Part Number: 511226, Serial Number: HN02437934, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921